Hanoi vs London - City Size Comparison

Is Hanoi Bigger Than London?

Yes — Hanoi is 2.1x larger than London by area. Hanoi spans 3,359 km² (1,297 mi²) while London covers 1,572 km² (607 mi²) — a difference of 1,787 km². You could fit London inside Hanoi approximately 2 times.

About Hanoi

Vietnam's capital with over a thousand years of history. Known as "The City of the Ascending Dragon", Hanoi covers 3,359 km² with a population of 8.1 million. The city was established in 1010. Hanoi is known for Hoàn Kiếm Lake, Old Quarter (36 Streets), Ho Chi Minh Mausoleum, among other attractions. The city's main transit system is the Hanoi Metro.

Hanoi's Old Quarter has been a trading hub for nearly 1,000 years, with each street historically dedicated to a specific trade

About London

Capital of England and the United Kingdom. Often called "The Big Smoke", London has an area of 1,572 km² and is home to 9.0 million people. Its history stretches back to 43. Visitors come for Big Ben, Tower of London, Buckingham Palace, and much more. Getting around is easy with the London Underground.

London was the first city to have an underground railway, opening in 1863

Metropolitan Area Comparison

Looking beyond city limits, the London metropolitan area covers 8,382 km², which is 2.5x larger than greater Hanoi at 3,359 km². The London metro area is also more populous, with 14.3 million people compared to 8.1 million.

Population Density

Hanoi has a population density of 2,397 people per km² — a moderately dense city. London, with 5,712 people per km², is a densely populated city. London is noticeably denser, packing 2.4 times more people per square kilometer.

Climate & Time Zone

Hanoi has a humid subtropical climate while London experiences oceanic conditions. Summers are notably different: Hanoi averages 30°C compared to 19°C in London. When it's noon in Hanoi, it's 5:00 AM in London — a 7-hour time difference.